secitem.h
上传用户:lyxiangda
上传日期:2007-01-12
资源大小:3042k
文件大小:4k
- /*
- * The contents of this file are subject to the Mozilla Public
- * License Version 1.1 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy of
- * the License at http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS
- * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- * implied. See the License for the specific language governing
- * rights and limitations under the License.
- *
- * The Original Code is the Netscape security libraries.
- *
- * The Initial Developer of the Original Code is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1994-2000 Netscape Communications Corporation. All
- * Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL"), in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your
- * version of this file only under the terms of the GPL and not to
- * allow others to use your version of this file under the MPL,
- * indicate your decision by deleting the provisions above and
- * replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient
- * may use your version of this file under either the MPL or the
- * GPL.
- */
- #ifndef _SECITEM_H_
- #define _SECITEM_H_
- /*
- * secitem.h - public data structures and prototypes for handling
- * SECItems
- *
- * $Id: secitem.h,v 1.1 2000/03/31 19:40:08 relyea%netscape.com Exp $
- */
- #include "plarena.h"
- #include "seccomon.h"
- SEC_BEGIN_PROTOS
- /*
- ** Allocate an item. If "arena" is not NULL, then allocate from there,
- ** otherwise allocate from the heap. If "item" is not NULL, allocate
- ** only the data for the item, not the item itself. The item structure
- ** is allocated zero-filled; the data buffer is not zeroed.
- **
- ** The resulting item is returned; NULL if any error occurs.
- **
- ** XXX This probably should take a SECItemType, but since that is mostly
- ** unused and our improved APIs (aka Stan) are looming, I left it out.
- */
- extern SECItem *SECITEM_AllocItem(PRArenaPool *arena, SECItem *item,
- unsigned int len);
- /*
- ** Reallocate the data for the specified "item". If "arena" is not NULL,
- ** then reallocate from there, otherwise reallocate from the heap.
- ** In the case where oldlen is 0, the data is allocated (not reallocated).
- ** In any case, "item" is expected to be a valid SECItem pointer;
- ** SECFailure is returned if it is not. If the allocation succeeds,
- ** SECSuccess is returned.
- */
- extern SECStatus SECITEM_ReallocItem(PRArenaPool *arena, SECItem *item,
- unsigned int oldlen, unsigned int newlen);
- /*
- ** Compare two items returning the difference between them.
- */
- extern SECComparison SECITEM_CompareItem(const SECItem *a, const SECItem *b);
- /*
- ** Compare two items -- if they are the same, return true; otherwise false.
- */
- extern PRBool SECITEM_ItemsAreEqual(const SECItem *a, const SECItem *b);
- /*
- ** Copy "from" to "to"
- */
- extern SECStatus SECITEM_CopyItem(PRArenaPool *arena, SECItem *to,
- const SECItem *from);
- /*
- ** Allocate an item and copy "from" into it.
- */
- extern SECItem *SECITEM_DupItem(const SECItem *from);
- /*
- ** Free "zap". If freeit is PR_TRUE then "zap" itself is freed.
- */
- extern void SECITEM_FreeItem(SECItem *zap, PRBool freeit);
- /*
- ** Zero and then free "zap". If freeit is PR_TRUE then "zap" itself is freed.
- */
- extern void SECITEM_ZfreeItem(SECItem *zap, PRBool freeit);
- SEC_END_PROTOS
- #endif /* _SECITEM_H_ */